Vampire death dealer Selene (Kate Beckinsale) must fend off brutal attacks from both the Lycan clan and the Vampire faction that betrayed her. With her only allies, David (Theo James) and his father Thomas (Charles Dance), she must stop the eternal war between Lycans and Vampires, even if it means she has to make the ultimate sacrifice.

The first Underworld movie was released in 2003, and follows the adventures of Selene, a vampire warrior caught in the war between vampires and Lycans.